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IUPAC - heavy water (H02758)

https://doi.org/10.1351/goldbook.H02758
Water containing a significant fraction (up to 100 per cent) of @D01648@ in the form of D2O or HDO.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1544 [Terms] [Paper]